toshiba cable modem + 1720 = LAN??

ajamua · ‎03-12-2002

I have road runner cable broadband with a toshiba modem. I would like to be able to connect it to my 1720 router. I here is my show version:

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-K9O3SY7-M), Version 12.2(4)T, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Compiled Fri 28-Sep-01 04:11 by ccai

Image text-base: 0x800080E0, data-base: 0x80C4F8E4

ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)

isengard uptime is 10 hours, 17 minutes

System returned to ROM by power-on

System image file is "flash:c1700-k9o3sy7-mz.122-4.T.bin"

cisco 1720 (MPC860) processor (revision 0x601) with 27853K/4915K bytes of memory.

Processor board ID JAD051606U1 (4168043553), with hardware revision 0000

M860 processor: part number 0, mask 32

Bridging software.

X.25 software, Version 3.0.0.

1 Ethernet/IEEE 802.3 interface(s)

1 FastEthernet/IEEE 802.3 interface(s)

1 Virtual Private Network (VPN) Module(s)

32K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

I think this is the correct IOS and I have the ethernet WIC card installed. Can you tell me if this is possible. I want to be able to configure NAT and DHCP server on the 1720 for my internal LAN.

tepatel · ‎03-12-2002

You got cable modem along with the toshiba analog modem..Now you can't connect the cable modem with 1720 over a cable line but you can use the analog modem to connect to 1720's AUX port using PPP or exec connection.

Now since you have ethernet and fast ethernet on the router, you can use the router as DHCP server along with NAT too.

Here is the url which will help you.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t1/easyip2.htm